After doing some research...I made the switch...our pup was four and a half months....and we could not have made a better decision. Now I admit...it was pretty shocking to watch my dog crack on a chicken bone...gulp...and gone. My biggest concern was puppy teeth not grinding the bone(s) up enough and causing an obstruction.
Over time...that "fear" relaxed...and now that were rid of puppy teeth and her adult teeth are coming in nicely...she really grinds those bones up good.
So far...we have not had a problem...and if your concerned with the size of the chicken leg/high...you can start them out on the Chicken Drumettes instead of a whole chicken leg. I have a Rottie pup, so I was not too concerned per say with that aspect too much. Were rounding out one month of raw...and our girl is loving it. She is much more even keel regarding temperament...not that she was wild...has more energy when it's time to "work".
One of the biggest things I have noticed is no more rock eating...concrete...shells...drinks much less water, half the poop, and her coat is like wet ink.
Go for it...I'm actually having fun mixing up her dinners now....and she really appreciates the change. We also had an anal gland issue which is no longer present either...so raw has eliminated multiple "problems"...and I have been able to see the differences.